鼻咽癌早期出现的症状是()
A.鼻堵,鼻衄,面颧部肿痛
B.血涕,耳鸣,头痛
C.鼻堵,面肿,复视
D.咳嗽,音哑,痰血
E.头痛,头晕,一侧肢体麻木
参考答案:B
I am by his attitude after hearing his words.
A.puzzled;puzzled
B.puzzling;puzzling
C.puzzled;puzzling
D.puzzling;puzzled
应在什么情况下进行锅炉定期排污?